Improved horseshoe-calk



J. L. PIKE.

HORSESHOE OALK.

No. 46,262. Patented Feb. 7, 1865.

Ohm/M4 v li W UNITED STATES.

PATENT OFFICE.

' JAMES L. PIKE, or LYNN, MASSACHUSETTS.

IMPROVED HORSES H-OE-CALK.

.Spccitication forming part of Letters Patent No. 46,262. dated February 7, 1865.

To all whom it may concern;

Be it knownthat I, JAMES L. PIKE, of Lynn, in, the county of Essex and State of Massachusetts, have invented a new anduseful Improvement in Horseshoe-Oalks; .andI do hereby de-- clare that the following is a full,-clear, and exact description of the construction and (6%)- eration of the same, reference being bad to e accompanying drawings, forming a part of this specification, in which- Figure 1 Ba plan of the bottom of a shoe with the calks attached; Fig. 2. a side elevation of the toe'calk; Fig. 3, a front elevation of the same, and Fig. 4 a side elevation of a heel-calk.

Like parts are indicated by the sameletters inall the drawings, whichare intended to be full-sized.

The nature of my invention consists, first,

in constructing horseshoe-talks of cast iron'or cast-lron chilled or case-hardened, in-

stead of the forged iron andsteel calks in general use, whereby I am enabled to produce a much cheaper and neater-looking article than any known or used before, and'as hard. and durable as hardened steel; second, in casting one or more starts or dowel-pins on the upper side of the calks, to enter corresponding holes in the body of the shoe, andthereby prevent the'calk, when attached to the shoe, fromslipping on it in any direction; and, third,'incon fining the calk to the shoe by means of a dowel calk in an iron mold to harden it by chilling,

I cast it in sand in the usual manner, and. then case-harden it in any of the ordinary methods' of case-hardening, or in some cases a simple cast-iron calk maybe used without being the shoe, which is provided-with two round holes to. receive them, as shown by the dotted lines in Fig. 1. I

g, b is an extension of the calk, and .shaped as clearly shown in Figs. 1 and 2.

.e is a screw,,which passes through the calk and entersaninternal screw in the body of the shoe, keeping'theealk fast upon the same, the two starts preventing it from slipping on the shoe in any direction. g

The heel-calks are-cast with a single start,

11, andv in about the relative position indicated in Figs. 1 and 4., said start entering a suitable hole in the body of the shoe and preventing the calk from sliding'on the shoein the direction of 'the principal strain. The heel-calks are further confinedto the shoe by means of a screw, --e, in the same manner as the toe-calks.

' Galks thusconstructed can-be very readily atshoe-calk of chilled or case-hardened cast-iron,

constructed substantially as and for, the objects specified.

. JAMES L. PIKE.

Witnesses:

' N. Anus, I B. (120mm 

